Cement water injection in an equipped borehole of the Meuse Haute Marne Underground Research Laboratory: monitoring and modeling
Résumé
Concrete will be significantly used in the context of deep repository for radioactive wastes for building access structures, galleries as well as vaults and waste packages for Intermediate Level Wastes (ILW). These materials constitute a compromise between properties, technical use and cost. As the repository can be constructed in a low-porosity detrital argillite (Callovo-Oxfordian) in the Mesozoic formations of Eastern part of the Paris Basin (France), and as swelling clays are planned to be used as sealing materials, concretes will be in contact with clayish materials. Due to the geochemical disequilibrium between concrete and clays, chemical reaction can modify both chemical and physical properties of these materials (i.e. mineral phases, diffusion coefficient, et cetera). In order to improve knowledge on the long term behavior of concrete/clays interfaces and the evolution of the properties with time, the MLH experiment has been conducted since July 2010 in the Meuse/Haute-Marne Underground Research Laboratory. The results will be used to calibrate and improve long term predictive modeling.
Domaines
Sciences de l'environnement| Origine | Fichiers produits par l'(les) auteur(s) |
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